package com.bbc.yuntun.framwork.config;


import com.bbc.yuntun.framwork.config.properties.PermitAllUrlProperties;
import com.bbc.yuntun.framwork.security.filter.JwtAuthenticationTokenFilter;
import com.bbc.yuntun.framwork.security.handle.AuthenticationEntryPointImpl;
import com.bbc.yuntun.framwork.security.handle.LogoutSuccessHandlerImpl;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;
import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
import org.springframework.security.config.annotation.web.configurers.HeadersConfigurer;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

/**
 * SpringSecurity配置
 *
 * @author ruoyi
 */
@Configuration
@EnableMethodSecurity(securedEnabled = true)
public class SecurityConfig {

    /**
     * 解决无法直接注入AuthenticationManager的问题
     *
     * @return 身份认证管理器
     * @throws Exception 异常
     */
    @Bean
    public AuthenticationManager authenticationManager(AuthenticationConfiguration authenticationConfiguration) throws Exception {
        return authenticationConfiguration.getAuthenticationManager();
    }

    /**
     * 身份认证接口
     * @param userDetailsService userDetailsService
     * @return DaoAuthenticationProvider
     */
    @Bean
    public DaoAuthenticationProvider daoAuthenticationProvider(UserDetailsService userDetailsService) {
        DaoAuthenticationProvider provider = new DaoAuthenticationProvider();
        provider.setUserDetailsService(userDetailsService);
        provider.setPasswordEncoder(bCryptPasswordEncoder());
        return provider;
    }

    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
    @Bean
    public SecurityFilterChain securityFilterChain(HttpSecurity httpSecurity,
                                         AuthenticationEntryPointImpl unauthorizedHandler,
                                         LogoutSuccessHandlerImpl logoutSuccessHandler,
                                         JwtAuthenticationTokenFilter authenticationTokenFilter,
                                         CorsFilter corsFilter,
                                         PermitAllUrlProperties permitAllUrl) throws Exception {
        // 注解标记允许匿名访问的url
        httpSecurity.authorizeHttpRequests(registry -> permitAllUrl.getUrls().forEach(url -> registry.requestMatchers(url).permitAll()));

        httpSecurity
                // CSRF禁用，因为不使用session
                .csrf(AbstractHttpConfigurer::disable)
                // 禁用HTTP响应标头
                .headers(headers -> headers.cacheControl(HeadersConfigurer.CacheControlConfig::disable))
                // 认证失败处理类
                .exceptionHandling(h -> h.authenticationEntryPoint(unauthorizedHandler))
                // 基于token，所以不需要session
                .sessionManagement(m -> m.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                // 过滤请求
                .authorizeHttpRequests(authorizeHttpRequests -> authorizeHttpRequests
                        // 对于登录login 注册register 验证码captchaImage 允许匿名访问
                        .requestMatchers("/login", "/register", "/captchaImage").permitAll()
                        // 微信接口
                        .requestMatchers("/wx/**").anonymous()
                        // 静态资源，可匿名访问
                        .requestMatchers(HttpMethod.GET, "/", "/*.html", "/*/*.html", "/*/*.css", "/*/*.js", "/profile/**").permitAll()
                        .requestMatchers("/doc.html", "/webjars/**", "/v3/api-docs/**", "/druid/**").permitAll()
                        // 除上面外的所有请求全部需要鉴权认证
                        .anyRequest().authenticated())
                .headers(headers -> headers.frameOptions(HeadersConfigurer.FrameOptionsConfig::disable));
        // 添加Logout filter
        httpSecurity.logout(l -> l.logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler));
        // 添加JWT filter
        httpSecurity.addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
        // 添加CORS filter
        httpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
        httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);

        return httpSecurity.build();
    }

    /**
     * 强散列哈希加密实现
     */
    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }

}
